Easy to operate & save mone the solar street lamp is easy to install, and it does not require additional hard-wire links, and can be mounted on a wall or pole. the diameter of the support rod ranges from 1 to 3 inches. and it saving installation costs and maintenance costs, electricity bills as well. attention : please turn on the solar outdoor light before installation. high efficiency & long lifetime polysilicon solar panels street light outdoor use polycrystalline silicon photovoltaic panels with the high photoelectric conversion efficiency. solar light outdoor built-in 20000mah large capacity lithium battery, to be fully charged in only 6-8 hours, providing a long working time about 18-20 hours in bright mode. built-in motion sensor for large angle and area led solar gutter lights cover a180°angle, 1610sq.ft area. solar motion sensor